Images Tree: Change 'Used' to 'In Use'

Signed-off-by: Brian Goff <cpuguy83@gmail.com> (cherry picked from commit df52ddc) Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: cpuguy83

cli/command/image/tree.go

@@ -46,7 +46,7 @@ func runTree(ctx context.Context, dockerCLI command.Cli, opts treeOptions) error
 details := imageDetails{
 ID: img.ID,
 DiskUsage: units.HumanSizeWithPrecision(float64(img.Size), 3),
-Used:  img.Containers > 0,
+InUse: img.Containers > 0,
 }
 
 var totalContent int64
@@ -63,14 +63,14 @@ func runTree(ctx context.Context, dockerCLI command.Cli, opts treeOptions) error
 Details: imageDetails{
 ID: im.ID,
 DiskUsage: units.HumanSizeWithPrecision(float64(im.Size.Total), 3),
-Used:  len(im.ImageData.Containers) > 0,
+InUse: len(im.ImageData.Containers) > 0,
 ContentSize: units.HumanSizeWithPrecision(float64(im.Size.Content), 3),
 },
 }
 
-if sub.Details.Used {
+if sub.Details.InUse {
 // Mark top-level parent image as used if any of its subimages are used.
-details.Used = true
+details.InUse = true
 }
 
 totalContent += im.Size.Content
@@ -100,7 +100,7 @@ func runTree(ctx context.Context, dockerCLI command.Cli, opts treeOptions) error
 type imageDetails struct {
 ID string
 DiskUsage string
-Used  bool
+InUse bool
 ContentSize string
 }
 
@@ -179,12 +179,12 @@ func printImageTree(dockerCLI command.Cli, view treeView) error {
 },
 },
 {
-Title: "Used",
+Title: "In Use",
 Align: alignCenter,
-Width: 4,
+Width: 6,
 Color: &greenColor,
 DetailsValue: func(d *imageDetails) string {
-if d.Used {
+if d.InUse {
 return "✔"
 }
 return " "